... back-and-forth mode ==> 前后扫描方式 back-angle ==> 反向角 back-angle counter ==> 记录逆向散射粒子的计数管 ...
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back angle [机] 背锥角 ; 后视角 ; 后背角 ; 背垫短角钢
back angle level 靠背角水平仪 ; 靠背角程度仪
back angle quadrant 靠背角量角器
sweep back angle 后掠角
tool back angle 背前角
back-angle counter 逆向散射粒子计数器 ; 记录逆向散射粒子的计数管
Photons travelling at any other angle within the material are reflected back inside when they reach the surface.
在发热材料内其运动方向与材料表面成其它任何角度的光子在碰到表面时都会被反弹回来。
Then, at the same place, bend it back to form a right-angle in the opposite direction.
然后,在同一个地方,把它弯回去形成反方向的直角。
Mr Reid is pounding her for those statements and Ms Angle is back-pedalling, saying that, actually, she wants to “keep the promise of Social Security”.
里德(Reid)对她的这些言论给予了猛烈的攻击,安格拉(Angle)又开始自食其言,说实际上她是想 “遵守社会保障的承诺。”
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